Popular belief has it that the term Balisong is
derived from the Tagalog words baling sungay
(meaning, “broken or folding horn”). These knives,
were originally crafted from stag horn and carved
carabao in the town of Taal, Bantangas province and
named after a Barangay.

Sometimes called
viente y nueve (or Spanish for the number 29) the
traditional Balison is 29 centimeters in length when
fully opened.

The unusual action of opening
the butterfly knife by flipping,
turning, and fanning causes a “click clack” sound in
the process of being opened and closed.